Lesson 4 of 13
Spotting a supercell
Show on a big screenLook at a grid of numbers — boxes in rows and columns. Which numbers are bigger than every neighbour? Check 67.
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Step 1 of 4
- A number grid.
- Look at 67 and its neighbours.
- 67 is bigger than 23, 12 and 15.
- 67 is a supercell!
The rule
The neighbours of a number touch it: up, down, left and right.
A number bigger than every neighbour it has is a supercell.
Only 2 boxes are up, down, left or right of a corner. So a corner number has only 2 neighbours. A corner number can still be a supercell.
Example
41 is in a corner. Its neighbours are 34 and 22. 41 is bigger than 34 and bigger than 22. So 41 is a supercell.
Try the lab to finish this lesson.